1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Musya8 [376]
2 years ago
9

A celebrated Mark Twain story has motivated contestants in the Calaveras County Jumping Frog Jubilee, where frog jumps as long a

s 2.20 m have been recorded. If a frog jumps 2.20 m and the launch angle is 36.5°, find the frog's launch speed and the time the frog spends in the air. Ignore air resistance.
(a)the frog's launch speed (in m/s)

(b)the time the frog spends in the air (in s)
Physics
1 answer:
IrinaK [193]2 years ago
4 0

The frog's launch speed and the time spends in the air are 22.5m/s and 2.73s respectively.

To find the answer, we need to know about the time of flight and range of projectile motion.

<h3>What's the expression of range of a projectile motion?</h3>
  • Range = U²× sin(2θ)/g
  • U= initial velocity, θ= angle of projectile and g= acceleration due to gravity
  • U=√{Range×g/sin(2θ)}
  • Here, range= 2.20m, = 36.5°
  • U= √{2.20×9.8/sin(73)}

U= √{2.20×9.8/sin(73)} = 22.5m/s

<h3>What's the expression of time of flight in projectile motion?</h3>
  • Time of flight= (2×U×sinθ)/g
  • So, T= (2×22.5×sin36.5°)/9.8

= 2.73 s

Thus, we can conclude that the frog's launch speed and the time spends in the air are 22.5m/s and 2.73s respectively.

Learn more about the range and time period of projectile motion here:

brainly.com/question/24136952

#SPJ1

You might be interested in
my choice1A child pushes a toy truck up an inclined plane. The lifting force is...Select one:ut ofO a. the weight of the truck.O
mash [69]

When pushing a toy truck up an inclined plane, the force that makes the truck goes up is the force that the child uses to push the truck. (The force that pushes

Therefore the correct option is C.

4 0
1 year ago
Calculate the size of the image of a tree that is 8m high and 80 m a pinhole camera that is 20 cm long . what is its magnificati
Vladimir79 [104]

1) Size of the image: 2 cm

In order to calculate the size of the image, we can use the following proportion:

p:q = h_o : h_i

where

p = 80 m is the distance of the tree from the pinhole

q = 20 cm = 0.2 m is the distance of the image from the pinhole

h_o = 8 m is the heigth of the object

h_i is the height of the image

By re-arranging the proportion, we find

h_i = \frac{h_o \cdot q}{p}=\frac{(8 m)(0.2 m)}{80 m}=0.02 m=2 cm


2) Magnification: 0.0025

The magnification of a camera is given by the ratio between the size of the image and the size of the real object:

M=\frac{h_i}{h_o}

so, in this problem we have

M=\frac{0.02 m}{8 m}=0.0025


4 0
3 years ago
n general, which trophic level has the LEAST energy available to it? A) producer B) primary consumer C) secondary consumer D) te
zaharov [31]
D - tertiary consumer

This is because it is the farther up to food chain.  
4 0
3 years ago
What is not changed when work is done by a machine?
den301095 [7]
B) The amount of work done
4 0
3 years ago
Read 2 more answers
A girl whose weight is 220-N hangs from
DENIUS [597]

Answer: 55n

Explanation:

3 0
3 years ago
Other questions:
  • A straight, nonconducting plastic wire 9.50 cm long carries a charge density of 130 nC/m distributed uniformly along its length.
    5·1 answer
  • Plants absorb WHAT from the atmosphere and release WHAT to the atmosphere.
    11·2 answers
  • In which situation can you be at rest and moving at the same time
    14·1 answer
  • Two sheets of polarizing material are placed such that their polarizing axes are 90° to each other and no light passes through t
    15·1 answer
  • Which two statements about composite materials are true?
    15·1 answer
  • Which of the following are used in an electrochemical cell?
    11·1 answer
  • A horizontal force of 12 Newtons is applied to a 4.0 kg box that slides on a horizontal surface. The box starts from rest moves
    10·1 answer
  • Which idea would most likely be dangerous for a student to think while entering a lab?
    9·1 answer
  • What is the precision (relative error) of the centripetal force divided by the mass if the velocity and the radius are each dete
    7·1 answer
  • Please just give me an answer, thanks.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!